सार्धत्र्यंशात्ममात्रस्य प्रथमेंऽशे स्फुटारवे ।प्रणवस्य समाक्षुब्धप्राणारणितदेहके
In plain words
in the first portion — a portion of clear, manifest sound — of the praṇava, whose measure is three mātrās and a half, the body now resonant with prāṇa thoroughly stirred —